Rehoboam built cities for defence in Judah That is, repaired, enlarged, and fortified them: for these cities, or divers of them, were built before, as appears from Joshua 10:10; Joshua 12:15; Joshua 15:24; Joshua 15:33-58; Joshua 19:42.
Related Commentaries of 2 Chronicles 11:5
2 Chronicles 11:5
5 And Rehoboam dwelt in Jerusalem, and built cities for defence in Judah.